After a rocky setup, I am now in love with WinDAS. I was able to bring this Sony-tubed SGI back from the dead and I couldn't be happier with the results! :
Found a Silicon Graphics monitor for sale (actually a Sony GDM under the badge) : r/crtgaming
VINTAGE SILICON GRAPHICS SGI 19" CRT Monitor Model CM-2086 Professional Iris 4D EUR 452,24 - PicClick IT
Scored a NOS SGI F220 Monitor (with the speakers!)
File:SGI CRT monitors.jpg - Wikimedia Commons
Monitors on SGI Machines - Higher Intellect Vintage Wiki
SGI 22'' Silicon Graphic CRT Monitor for sale @ $50 each(AAR308), Computers & Tech, Parts & Accessories, Monitor Screens on Carousell
ArtStation - Silicon Graphics Monitor Raspberry Pi Case | Resources